<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model='name'/>
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model.number='age'/>
    </div>
    <div>
      <span>性别:</span>
      <select v-model="sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addFn">添加/修改</button>
    </div>
    <div>
      <table
        border="1"
        cellpadding="10"
        cellspacing="0"
      >
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item,index) in arr" :key="index">
          <td>{{index + 1}}</td>
          <td>{{item.name}}</td>
          <td>{{item.age}}</td>
          <td>{{item.sex}}</td>
          <td>
            <button @click="delFn(index)">删除</button>
            <button @click="alTer(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      name: '',
      age: '',
      sex: '',
      falg: false,
      index:0,
      arr:[
        {
          name:" Tom",
          age: 19,
          sex:"男",
        },
        {
          name:" Jone",
          age: 20,
          sex:"女",
        }
      ]
    }
  },
  methods: {
    delFn(index) {
      this.arr.splice(index, 1)
    },
    alTer(index) {
      this.falg = true
      this.index = index
      this.name = this.arr[index].name
      this.age = this.arr[index].age
      this.sex = this.arr[index].sex
    },
    addFn() {
      if (this.falg) {
        this.arr[this.index].name = this.name
        this.arr[this.index].age = this.age
        this.arr[this.index].sex = this.sex
      } else {
        this.arr.push({
        name:this.name,
        age:this.age,
        sex:this.sex,
      })
      }
      this.falg = false
      this.name = ''
      this.age = ''
      this.sex = ''
    }
  }
}
</script>
